Company lists · Data refreshed October 2026

Top 25 Electrical systems contractors worldwide

Name: Electrical systems contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 38,886 companies tracked

RevenueBase identified 38,886 company matches for electrical systems contractors worldwide as of October 2026 and tracks 311,094 professional contacts across them, including 73,198 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for electrical systems contractors worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 12, 2026. Country and city lists for electrical systems contractors follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 12, 2026 How this list was built

38,886Companies

311,094Contacts tracked

73,198Verified emails

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The 25 largest electrical systems contractors worldwide

Ranked by team size

Top 25 of 38,886 company matches for electrical systems contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	IES Holdings	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	5,001-10,000	2,661 contacts →
	Exact match “IES Holdings, Inc.(formerly known as Integrated Electrical Services, Inc.) provides electrical contracting services to commercial, industrial, and residential customers in the…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Helix Electric	Exact match	San Diego, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,618 contacts →
	Exact match “Helix Electric is an award-winning electrical contractor specializing in design-build and highly complex electrical projects throughout the United States.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Facility Solutions Group	Exact match	Austin, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,294 contacts →
	Exact match “Big jobs, complex systems, tight timelines.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	MJ Quinn	Exact match	Prescot, United KingdomHQ recorded Oct 12, 2026	1,001-5,000	1,287 contacts →
	Exact match “At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Bergelectric	Exact match	Carlsbad, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,210 contacts →
	Exact match “Since their inception in 1946, Bergelectric has made its mark on the construction industry by providing the highest quality electrical and technology contracting.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Walker Engineering	Exact match	Irving, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,124 contacts →
	Exact match “Walker Engineering has a solid reputation in the industry that is based on over 45 years of delivering top notch electrical work for a fair and competitive price.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	MYR Group	Exact match	Thornton, CO, United StatesHQ recorded Oct 12, 2026	5,001-10,000	1,111 contacts →
	Exact match “With roots dating to 1891 and employees, MYR Group Inc.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Archkey Solutions	Exact match	St. Louis, MO, United StatesHQ recorded Oct 12, 2026	1,001-5,000	880 contacts →
	Exact match “ArchKey, one of the largest privately held specialty trade installation and facilities services companies in the United States, is a leader in designing, building, and maintaining…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Sturgeon Electric Company, INC	Exact match	Henderson, CO, United StatesHQ recorded Oct 12, 2026	1,001-5,000	797 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Elec-Tech Electrical Contractors	Exact match	Long Beach, CA, United StatesHQ recorded Oct 12, 2026	n/a	778 contacts →
	Exact match “WELCOME TO OUR WEBSITE!” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	SASCO	Exact match	Fullerton, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	759 contacts →
	Exact match “SASCO has been a leader in electrical construction and low-voltage systems technologies for 50 years.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Prism Electric	Exact match	Garland, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	717 contacts →
	Exact match “Our story began in 1994 with a simple vision: Build a company that does things right.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Prime Electric	Exact match	Bellevue, WA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	710 contacts →
	Exact match “For over a quarter century, Prime has been successfully engineering, constructing building, and facilities solutions for our clientele.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Mass. Electric Construction CO	Exact match	North America, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	685 contacts →
	Exact match “Mass.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Cummings Electrical	Exact match	Fort Worth, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	671 contacts →
	Exact match “Cummings Electrical,(Cummings) is one of the largest providers of electrical contracting services in DFW market.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	M. J. Electric, LLC	Exact match	Iron Mountain, MI, United StatesHQ recorded Oct 12, 2026	1,001-5,000	666 contacts →
	Exact match “M.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Cache Valley Electric	Exact match	Logan, UT, United StatesHQ recorded Oct 12, 2026	1,001-5,000	662 contacts →
	Exact match “As one of the nation’s premier electrical contractors, we don’t just provide high-quality services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	HOULE	Exact match	Burnaby, BC, CanadaHQ recorded Oct 12, 2026	501-1,000	654 contacts →
	Exact match “At Houle, we are passionate about bringing communities to life.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Temon Técnica DE Montagens E Construções	Exact match	Sao Paulo, BrazilHQ recorded Oct 12, 2026	1,001-5,000	646 contacts →
	Exact match “Desde 1978 atuando na execução de Instalações Elétricas e Hidráulicas, a Temon conseguiu firmar sua marca nesse mercado com participação em mais de obras por todo Brasil e…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Rogers Electric	Exact match	Alpharetta, GA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	630 contacts →
	Exact match “Rogers Electric is the leading national service provider for all of your construction, rollouts, electrical, and lighting needs.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Alterman, INC	Exact match	Live Oak, TX, United StatesHQ recorded Oct 12, 2026	501-1,000	615 contacts →
	Exact match “Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Resa Power	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	590 contacts →
	Exact match “RESA Power is your ONE-STOP for all of your power needs.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	CSI Electrical Contractors, INC	Exact match	Santa Fe Springs, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	585 contacts →
	Exact match “Founded in 1990, CSI has become a leader in highly technical and innovative electrical design and construction.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Colonialwebb	Exact match	Richmond, VA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	585 contacts →
	Exact match “ColonialWebb is built on a simple belief: when people feel like they belong and have a purpose, they can achieve almost anything.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Summit Electric Supply	Exact match	Albuquerque, NM, United StatesHQ recorded Oct 12, 2026	501-1,000	580 contacts →
	Exact match “Summit Electric Supply is an independent, privately held wholesale distributor of industrial electrical equipment and supplies ranging from basic commodities to sophisticated…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “electrical systems contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 38,886 electrical systems contractors worldwide

See the full list, filter by size, metro and specialty, and access 73,198 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical systems contractors worldwide at a glance

As of Oct 12, 2026

23.5%Verified-email coverage

8.0Average contacts per company

1-10Median size (employees)

0.8%Largest-city concentration · London

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

20,076

11-50

13,271

51-200

3,846

201-500

722

501-1,000

202

1,001-5,000

130

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for electrical systems contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “electrical systems contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 73,198 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on October 12, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Electrical systems contractors by location

107 lists · largest first

Every Electrical systems contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “electrical systems contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electrical systems contractors are there worldwide?

RevenueBase identified 38,886 company matches for electrical systems contractors worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

IES Holdings tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most electrical systems contractors?

The United States leads with 10,076 companies, followed by the United Kingdom (4,751) and Italy (2,097). Every electrical systems contractors list by country and city is linked on this page.

Which city has the most electrical systems contractors?

London leads with 296 company records, followed by Sao Paulo (180) and Houston (151).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 73,198 professional contacts with verified work emails tracked across these 38,886 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 12, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.